two different phones. Unlocked samsung note 8 and an unlocked Moto G5+. Started a couple of weeks ago. The messages seem to have been sent and will send again if tapped to re send. I have tried both with data only and on wifi. I have also tried multiple apps, textra, android messages, stock samsung, mood, pulse. This is on two different lines. I have even restored my phone.

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Well that is super strange! So the phone is saying that the message is not sent but it is and when you hit resend, it sends again? If this is happening with multiple apps on 2 different lines/phones, the issue could very well be the network kicking back the error. With all the troubleshooting you have tried, have you had the chance to try your SIMs in T-Mobile branded phones?